Command to list active sector locks

[magik6k]

Needed this to test a theory on why some retrievals might hang, might be useful.

$ lotus-miner storage locks
2428    PreCommit1      unsealed(R:1) sealed(W) cache(W)
2429    PreCommit2      sealed(R:1) cache(W)

[codecov]

Codecov Report

Merging #7735 (727765b) into master (9331714) will decrease coverage by 0.11%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #7735      +/-   ##
==========================================
- Coverage   39.58%   39.47%   -0.11%     
==========================================
  Files         640      640              
  Lines       68332    68378      +46     
==========================================
- Hits        27052    26995      -57     
- Misses      36647    36732      +85     
- Partials     4633     4651      +18     

Impacted Files	Coverage Δ
api/api_storage.go	0.00% <ø> (ø)
cmd/lotus-miner/storage.go	27.88% <0.00%> (-1.56%)	⬇️
extern/sector-storage/stores/index.go	75.28% <ø> (ø)
extern/sector-storage/stores/index_locks.go	64.28% <0.00%> (-15.13%)	⬇️
extern/sector-storage/stores/mocks/index.go	15.00% <0.00%> (-1.49%)	⬇️
chain/events/observer.go	71.64% <0.00%> (-6.72%)	⬇️
chain/exchange/peer_tracker.go	66.66% <0.00%> (-4.31%)	⬇️
chain/exchange/client.go	49.15% <0.00%> (-3.82%)	⬇️
chain/stmgr/call.go	67.87% <0.00%> (-3.64%)	⬇️
chain/types/tipset_key.go	85.96% <0.00%> (-3.51%)	⬇️
... and 17 more

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[arajasek]

nice!